Existentialist

[ɛgzɪs'tɛnʃəlɪst]

Definition

(noun.) a philosopher who emphasizes freedom of choice and personal responsibility but who regards human existence in a hostile universe as unexplainable.

(adj.) relating to or involving existentialism; 'existentialist movement'; 'existentialist philosophy'; 'the existentialist character of his ideas' .

Edited by Elvis--From WordNet